Tweco PCM-120 Machine Torch - Manual (Page 35)

Manual 0-2698 5-5 CUSTOMER/OPERATOR SERVICE
D. Limited output with no control
1. Poor input or output connections to power supply
a. Check all input and output connections.
2. Faulty components in torch and leads assembly
a. Inspect torch assemblies and replace if neces-
sary. Refer to Section 5.08, Torch and Leads
Troubleshooting.
3. Faulty components in power supply system components
a. Return for repair or have qualified technician
repair per Service Manual.
E. Improper cutting output
1. Current set too low at power supply
a. Increase current setting.
2. Torch is being moved too fast across workpiece
a. Reduce cutting speed (refer to Appendix 1, Cut-
ting Speed Charts).
3. Excessive oil or moisture in torch
a. Hold torch 1/8 inch (3 mm) from clean surface
while purging and observe oil or moisture
buildup (do not activate torch)
4. Poor input or output connections to power supply
a. Check all input and output connections.
F. No gas flow
1. Gas not connected or pressure too low
a. Check source for at least 100-125 psi (6.9- 8.6
bar) maximum pressure.
2. Faulty components in torch and leads assembly
a. Inspect torch assemblies and replace if neces-
sary. Refer to Section 5.09, Torch and Leads
Troubleshooting.
3. Faulty components in power supply system components
a. Return for repair or have qualified technician
repair per Service Manual.
G. Torch cuts but not adequately
1. Current set too low at power supply
a. Increase current setting.
2. Torch is being moved too fast across workpiece
a. Reduce cutting speed (refer to Appendix 1, Cut-
ting Speed Charts).
3. Excessive oil or moisture in torch
a. Hold torch 1/8 inch (3 mm) from clean surface
while purging and observe oil or moisture
buildup (do not activate torch).